EOS 10-22mm: Do I need a SLIM polarizer?

[martin_chamberlain1]

I have a Canon EOS 10-22mm lens with a normal skylight filter which ideally I

don't want to remove. I want to buy a circular polarizer. Can I get away with

adding an ordinary thickness 77mm circular polarizer and still avoid

vignetting; or do I need to splash out and pay more for one of the special

thin ones (as sold by B+W filters for example)?

If anyone has first hand experience of this I'd be pleased to hear from you.

[peter_rowe]

Yes, you do need the slim filter. The regular filter will show vignetting at 10mm but is gone at 12mm. The problem is that it isn't just a darkening -- it's totally black in the extreme corners so no recovery is possible. There's quite a difference between 10mm and 12mm so get the slim filter and be happy.

 

--Peter

[bellavance]

Replace the Skylight filter with a lens hood, and get a slim polarizer.

 

Pierre

[mcgarity]

You do NOT need a slim filter. I have been using regular width filters, including a polarizer, on this lens for close to two years. With two filters stacked it will vignette badly at 10mm. However Its been my experience that when using just one filter at a time, vignetting is not an issue.

[david_wu6]

The different answers must be due to different brand of filters used in each case. It would be helpful if the brand is posted. Thanks!

[dcains]

The 10-22 will not vignette with the B+W F-Pro mount CPL, and I speak from first-hand experience on this point. I initially bought the B+W slim CPL, but the provided lens cap was useless, so I tried the F-Pro (which has front threads), and it is fine. FWIW, I then traded the 10-22 for a Sigma 10-20, and the same 77mm F-Pro CPL works just as well.

 

Also, don't stack filters, and I wouldn't use a UV unless the conditions included blowing sand, sea spray, etc. - even if you use a B+W MRC UV. Others will surely argue both points. Good luck with your choices.

 

Finally, www.maxsaver.net has the best prices on B+W filters, and again, that's first-hand experience, as I'm a 5X repeat customer.

[grant g]

You need a slim polarizer. A regular filter is 5mm, IIRC...and a 'regular' CPL is 7mm and will vignette at 10-11mm.

 

hth

[mark_kolkmann]

I would deffinetly recomend a slim polarizer. Make sure to remove the skylight filter. I would also do some testing with and without the Skylight filter. Even with the skylight filter I found I was losing alot of valubale contast with the skylight filter on.